[Bug 26185] New: [M96==RV730][KMS] Black screen after resume from RAM

[Bug 26185] New: [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185

           Summary: [M96==RV730][KMS] Black screen after resume from RAM
           Product: DRI
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.sourceforge.net
        ReportedBy: zajec5@gmail.com


Resume on this machine works fine when I boot with init=/bin/bash or if I boot
to init 3 and blacklist radeon module.

However when booting into init 3 with radeon module loaded resume works
partially.

When resuming from RAM I can see console for half a second and then it
disappears. In that half a second backlight seems to be lower as well, which is
fine for me, but maybe will give you some idea?


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185





--- Comment #1 from Rafał Miłecki <zajec5@gmail.com>  2010-01-23 05:14:02 PST ---
Created an attachment (id=32783)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32783)
dmesg


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185





--- Comment #2 from Rafał Miłecki <zajec5@gmail.com>  2010-01-23 05:14:35 PST ---
Created an attachment (id=32784)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32784)
regs dump before suspend


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185





--- Comment #3 from Rafał Miłecki <zajec5@gmail.com>  2010-01-23 05:15:06 PST ---
Created an attachment (id=32785)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32785)
regs dump after resume

got it by ssh


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185





--- Comment #4 from Rafał Miłecki <zajec5@gmail.com>  2010-01-23 05:19:12 PST ---
Created an attachment (id=32786)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32786)
diff -u init3.after.log init3.before.log


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185





--- Comment #5 from Rafał Miłecki <zajec5@gmail.com>  2010-01-23 05:21:36 PST ---
Is this possible that just after resume radeon loads everything fine, but then
some other module overwrites it's work?

On the other hand keep in mind that blacklisting radeon makes resume work
fine... Weird.

Can I provide more info for debugging it?


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185





--- Comment #6 from Rafał Miłecki <zajec5@gmail.com>  2010-01-23 05:22:20 PST ---
Oh, what I use is:

commit c8c15ff1e90bfc4a2db1ba77a01b3b2783e723fc
Author: Jerome Glisse <jglisse@redhat.com>
Date:   Mon Jan 18 13:01:36 2010 +0100

drm/radeon: r6xx/r7xx possible security issue, system ram access


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185





--- Comment #7 from Rafał Miłecki <zajec5@gmail.com>  2010-01-25 09:43:37 PST ---
Hm, the same bug happens on different notebook with RV620... Maybe it's
something in openSUSE that causes this? Both run this distribution.


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[Bug 26185] [M96==RV730][KMS] Black screen after resume from RAM

[bugzilla-daemon]

http://bugs.freedesktop.org/show_bug.cgi?id=26185


Rafał Miłecki <zajec5@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |NOTOURBUG




--- Comment #8 from Rafał Miłecki <zajec5@gmail.com>  2010-01-26 03:24:01 PST ---
The problem is that pm-suspend (s2ram?) uses quriks even for KMS. It tries to
restore GPU state in KMS, where it's already handled by KMS GPU driver.

Forcing pm-suspend to do not use quirks fixes problem.

See bug #26235 for details


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